| Description | Date | Identifier | |
| The use of an oil flow test to ascertain the condition of engine bearings, particularly for cars and aero engines. | 26th May 1938 | Box 107 \ 2 scan0127 | |
| Engine fault on a Bentley B.84-FE, attributing the cause to the driver's handling. | 26th May 1938 | Box 107 \ 2 scan0128 | |
| Request for tools to compress shells into the journal bearings for a Bentley. | 23th May 1938 | Box 107 \ 2 scan0129 | |
| Expressing grave doubts about the method of fitting Bentley bearings into their housings. | 28th May 1938 | Box 107 \ 2 scan0130 | |
| Potential adoption of a shortened change speed lever for the new Bentley. | 28th May 1938 | Box 107 \ 2 scan0131 | |
| The unreliability of the oil cooler and tests to decide on its deletion from cars with specific bearings. | 27th May 1938 | Box 107 \ 2 scan0132 | |
| Proposal to abandon the oil cooler on Phantom III engines, based on tests conducted at Brooklands Track. | 25th May 1938 | Box 107 \ 2 scan0133 | |
| Analysis of temperature test results for oil and water under different vehicle operating conditions. | 25th May 1938 | Box 107 \ 2 scan0134 | |
| Summary of endurance tests to determine the necessity of an oil cooler based on bearing type and oil temperatures. | 25th May 1938 | Box 107 \ 2 scan0135 | |
| Results of oil temperature tests on a 35 EX car at Brooklands Track. | 27th May 1938 | Box 107 \ 2 scan0136 | |
| Correcting the engine size on Chassis B.67.DK from 3½ to 4¼ litre. | 27th May 1938 | Box 107 \ 2 scan0137 | |
| Investigations into clutch juddering issues on the Phantom III model. | 26th May 1938 | Box 107 \ 2 scan0138 | |
| Page 2 of a memo discussing the importance of following instructions that were received verbally. | 26th Sep 1938 | Box 107 \ 2 scan0139 | |
| Remedy for eccentric rocking lever bushes in the Phantom III hydraulic tappet mechanism. | 18th May 1938 | Box 107 \ 2 scan0140 | |
| Chart plotting centrifugal force against RPM for various radii of rotation. | 24th Mar 1938 | Box 107 \ 2 scan0141 | |
| Experimental use of thin oils on re-bored Bentley cars to assess cylinder bore wear. | 10th May 1938 | Box 107 \ 2 scan0142 | |
| Trial of thin oils on Bentley cars and the associated risks and agreements. | 9th May 1938 | Box 107 \ 2 scan0143 | |
| Mileage at which bottom decarbonising and reboring of Bentley engines becomes necessary. | 17th Jun 1937 | Box 107 \ 2 scan0144 | |
| Time schedule outlining the hours required for changing the front axle beam on a Bentley chassis. | 2nd Jan 1938 | Box 107 \ 2 scan0145 | |
| Schedule of repairs for Bentley brakes, including estimated hours for each task. | 2nd Jan 1938 | Box 107 \ 2 scan0146 | |
| List of supplementary service tasks related to brakes and servos, with their corresponding labor hours. | 2nd Jan 1938 | Box 107 \ 2 scan0147 | |
| Time sheet detailing the hours required to change a front axle beam on a Bentley chassis. | 6th May 1938 | Box 107 \ 2 scan0148 | |
| Correcting a typo from Phantom 111 to Phantom 11 on a complaints document. | 6th May 1938 | Box 107 \ 2 scan0149 | |
| Complaints and their resolutions for the Phantom III and other models. | 4th May 1938 | Box 107 \ 2 scan0150 | |
| Cost-saving improvements and fixes for Bentley engine roughness and other components. | 4th May 1938 | Box 107 \ 2 scan0151 | |
| Customer complaints about noisy heavy valves for the Phantom 113, detailing modification cases and profitability. | 4th May 1938 | Box 107 \ 2 scan0152 | |
| Following a Chassis Complaint Conference, detailing outstanding issues with the Phantom III, 25/30 HP, and Bentley models. | 14th Apr 1938 | Box 107 \ 2 scan0153 | |
| Minutes of a Chassis Complaints Conference. | 12th Apr 1938 | Box 107 \ 2 scan0154 | |
| Worst features and proposed remedies for the Phantom III model. | 12th Apr 1938 | Box 107 \ 2 scan0155 | |
| Technical issues including carburetters, brakes, radiators, and servos. | 12th Apr 1938 | Box 107 \ 2 scan0156 | |
| List of engineering complaints and planned investigations for oil leaks, speedometer drives, and other components. | 12th Apr 1938 | Box 107 \ 2 scan0157 | |
| List of the worst features for the 25/30 model, along with proposed remedies and ongoing investigations. | 12th Apr 1938 | Box 107 \ 2 scan0158 | |
| Technical sheet outlining issues and recommendations for Bentley vehicles. | 12th Apr 1938 | Box 107 \ 2 scan0159 | |
| Report page discussing recommended maximum vehicle speeds, noisy axles, and unreliable clocks and speedometers. | 11th Apr 1938 | Box 107 \ 2 scan0160 | |
| The wear of Wraith timing gears. | 11th Apr 1938 | Box 107 \ 2 scan0161 | |
| Investigation into timing gear wear, oscillations, and material suitability for various engine components. | 11th Apr 1938 | Box 107 \ 2 scan0162 | |
| Inspection report detailing measurements, tolerances, and notes for six numbered components. | 29th Jun 1926 | Box 107 \ 2 scan0163 | |
| Table detailing test results for various units, including running times, mileage, and backlash measurements. | 29th Jun 1926 | Box 107 \ 2 scan0164 | |
| Graph plotting Wraith III camshaft torque against camshaft angle at 4500 RPM. | 9th Apr 1938 | Box 107 \ 2 scan0165 | |
| Cover note for the agenda of a Chassis Complaints Conference. | 9th Apr 1938 | Box 107 \ 2 scan0166 | |
| Agenda for a Chassis Complaints Conference to be held in Derby, focusing on the worst features of the Phantom III model. | 12th Apr 1938 | Box 107 \ 2 scan0167 | |
| List of worst features for the 25/30 HP and 20/25 HP models suggested for discussion. | 12th Apr 1938 | Box 107 \ 2 scan0168 | |
| List of discussion points and worst features concerning Bentley vehicles. | 11th Apr 1938 | Box 107 \ 2 scan0169 | |
| Request from Jack Barclay for a Thermoid Clutch Plate for his Trials Car B.37.LE. | 11th Apr 1938 | Box 107 \ 2 scan0170 | |
| Letter to Bentley Motors Ltd. regarding a fault with modified type rotors where a securing screw was found to be slack. | 4th Apr 1938 | Box 107 \ 2 scan0171 | |
| Cover letter for a series of charts showing monthly complaints regarding the Bentley 4¼ Litre Chassis. | 11th Apr 1938 | Box 107 \ 2 scan0172 | |
| Piston scuffing issues related to different oil grades and consumption. | 8th Apr 1938 | Box 107 \ 2 scan0173 | |
| Test findings and recommendations regarding piston scuffing on experimental Wraith engines. | 5th Apr 1938 | Box 107 \ 2 scan0174 | |
| Test report on producing scuffed pistons and the effectiveness of different oils and tin-plating. | 5th Apr 1938 | Box 107 \ 2 scan0175 | |
| Photograph showing a standard piston after scuffing tests. | 5th Apr 1938 | Box 107 \ 2 scan0176 | |
| Photograph showing the results of a piston scuffing test. | 5th Apr 1938 | Box 107 \ 2 scan0177 | |
| Photograph showing a tin-plated piston after scuffing tests. | 5th Apr 1938 | Box 107 \ 2 scan0178 | |
| Photograph and results of a piston scuffing test. | 5th Apr 1938 | Box 107 \ 2 scan0179 | |
| Photograph and report on piston scuffing tests. | 8th Apr 1938 | Box 107 \ 2 scan0180 | |
| Listing engine complaints for the 25/30 Hp model for March. | 8th Apr 1938 | Box 107 \ 2 scan0181 | |
| List of reported faults and their quantities for Stromberg carburetters and Brakes. | 6th Apr 1939 | Box 107 \ 2 scan0182 | |
| List of reported faults and their quantities for the Clutch, Steering, Front Axle, and Rear Axle. | 2nd Apr 1938 | Box 107 \ 2 scan0183 | |
| Continued list of faults and their occurrences for various vehicle components, including mechanical and electrical systems. | 9th Apr 1938 | Box 107 \ 2 scan0184 | |
| Continued list of component failures and their corresponding quantities. | 8th Apr 1938 | Box 107 \ 2 scan0185 | |
| Continued list of vehicle faults including petrol leaks, gauge issues, and uncomfortable ride. | 8th Apr 1938 | Box 107 \ 2 scan0186 | |
| List of complaints concerning brakes for the 25/30 HP model during January and February. | 3rd Mar 1938 | Box 107 \ 2 scan0187 | |
| List of vehicle faults categorised by component, including carburetter, clutch, and engine issues. | 3rd Mar 1938 | Box 107 \ 2 scan0188 | |
| Technical report detailing faults and remarks on engine, dynamo, and starter motor components. | 3rd Mar 1938 | Box 107 \ 2 scan0189 | |
| List of vehicle faults related to chassis lubrication, shock absorbers, steering, and exhaust suspension. | 3rd Mar 1939 | Box 107 \ 2 scan0190 | |
| Continued list of reported vehicle component faults and the number of occurrences. | 3rd Mar 1938 | Box 107 \ 2 scan0191 | |
| Continued list of vehicle faults and personal complaints with their respective counts. | 3rd Mar 1938 | Box 107 \ 2 scan0192 | |
| Outstanding complaints on the 25/30 HP chassis, specifically regarding bonnet rattles and braking problems. | 3rd Feb 1938 | Box 107 \ 2 scan0193 | |
| Common vehicle complaints and their status, covering clutches, exhaust, engine, and front axle issues. | 3rd Feb 1938 | Box 107 \ 2 scan0194 | |
| Summary of Phantom III owners' complaints for the month of March, detailing engine issues. | 6th Apr 1938 | Box 107 \ 2 scan0195 | |
| Faults found in engines and Stromberg carburetters, with a tally for each category. | 6th Apr 1938 | Box 107 \ 2 scan0196 | |
| Faults and their frequency for steering and clutch systems. | 6th Apr 1938 | Box 107 \ 2 scan0197 | |
| Summary of vehicle faults and complaints for brakes, servo, and electrical systems. | 6th Apr 1938 | Box 107 \ 2 scan0198 | |
| Faults and complaints found on various vehicle components. | 6th Apr 1938 | Box 107 \ 2 scan0199 | |
| List of reported faults and issues for various vehicle components. | 6th Apr 1938 | Box 107 \ 2 scan0200 | |
| List of complaints for the Phantom III model engine during January and February. | 4th Mar 1938 | Box 107 \ 2 scan0201 | |
| Continued list of engine and carburetter faults with quantities, handwritten notes, and proposed modifications. | 4th Mar 1938 | Box 107 \ 2 scan0202 | |
| List of reported faults categorized by vehicle system, such as steering, clutch, and transmission. | 4th Mar 1938 | Box 107 \ 2 scan0203 | |
| Typed list of vehicle faults and their frequency, covering brakes, gearbox, starter, and electrical systems. | 4th Mar 1938 | Box 107 \ 2 scan0204 | |
| List of vehicle component failures and issues with corresponding counts. | 4th Mar 1938 | Box 107 \ 2 scan0205 | |
| List of vehicle faults and their frequency, categorized by component. | 4th Mar 1938 | Box 107 \ 2 scan0206 | |
| List of reported vehicle faults and issues, with tallied counts. | 4th Mar 1938 | Box 107 \ 2 scan0207 | |
| Service and owner complaints for the Phantom III model, detailing faults and remedial actions. | 21th Dec 1937 | Box 107 \ 2 scan0208 | |
| Various component issues including overoiling, oil coolers, brakes, and dynamo fuses, along with proposed fixes. | 21th Dec 1937 | Box 107 \ 2 scan0209 | |
| List of service complaints and proposed solutions for various vehicle components. | 21th Jan 1937 | Box 107 \ 2 scan0210 | |
| Minutes of a conference on service complaints regarding vehicle boiling issues. | 26th Oct 1937 | Box 107 \ 2 scan0211 | |
| Continued list of complaints and investigations for the Phantom III model, covering issues like petrol pumps, clutches, and steering. | 27th Oct 1937 | Box 107 \ 2 scan0212 | |
| Customer complaints and component issues for the Phantom III model. | 27th Oct 1937 | Box 107 \ 2 scan0213 | |
| Summary of complaints and remedies for P.III, 20/25 HP, and 25/30 HP models. | 27th Oct 1937 | Box 107 \ 2 scan0214 | |
| Ongoing complaints and proposed modifications for 25/30 HP and Bentley models. | 27th Oct 1937 | Box 107 \ 2 scan0215 | |
| Ongoing Bentley complaints regarding axle failures, brake squeaks, a request for a new revolution counter, and procedural issues with customer complaint forms. | 27th Oct 1937 | Box 107 \ 2 scan0216 | |
| Discussions regarding customer complaint forms and policies for free of charge repair work for Bentley and RR cars. | 27th Oct 1937 | Box 107 \ 2 scan0217 | |
| Outstanding complaints for the Bentley 4¼ Litre chassis, focusing on rear axle and engine bearing issues. | 4th Feb 1936 | Box 107 \ 2 scan0218 | |
| Technical report on improvements and complaints regarding bearings, brakes, servos, and steering components. | 4th Feb 1938 | Box 107 \ 2 scan0219 | |
| Faults found with Borg & Beck clutches and lightened type batteries. | 4th Feb 1938 | Box 107 \ 2 scan0220 | |
| List of main customer complaints regarding the Bentley 4¼ litre model. | 16th Oct 1936 | Box 107 \ 2 scan0221 | |
| Owner complaints and technical issues concerning bearings, clutch, brakes, and engine water leaks. | 16th Oct 1936 | Box 107 \ 2 scan0222 | |
| Issues with excessive oil consumption and loose steering in the frame. | 10th Oct 1936 | Box 107 \ 2 scan0223 | |
| Summary of main service complaints for Bentley rear axles, listing failure types and corresponding mileages. | 15th Oct 1937 | Box 107 \ 2 scan0224 | |
| Log of vehicle faults, modifications, and mileage records for various components. | 15th Oct 1937 | Box 107 \ 2 scan0225 | |
| Log of component failures and issues, detailing the mileage at which they occurred for thrust races, propellor shaft dampers, and clutches. | 15th Oct 1937 | Box 107 \ 2 scan0226 | |
| | | | |